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Finding the Fourth Proportional to 110.24, 151.90 and 79.18

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Solution

The fourth proportional to 110.24, 151.90 and 79.18 is: 109.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    110.24 : 151.90 = 79.18 : x
  2. Step 2: Convert to fraction form
    110.24/151.90 = 79.18/x
  3. Step 3: Cross multiply
    110.24x = 151.90 × 79.18
  4. Step 4: Simplify right side
    110.24x = 12,027.44
  5. Step 5: Solve for x
    x = 12,027.44/110.24
  6. Step 6: Final answer
    x = 109.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.